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Page iii of viii Revision history August 1996 Standard, Release 8.00. Reissued for X11 Release 22.0x. December 1994 Standard, Release 7.00. Reissued to include editorial changes and indexing. Due to the extent of the changes, revision bars are not used. August 1993 Standard, release 6.00.
Page 1 of 48 Description The Message Center allows an incoming trunk or internal call to be automatically routed to a Message Center if it is not answered at the original destination. The main functions of the Message Center are as follows: —...
Page 2 of 48 Description Incoming calls to the Message Center Calls coming into a Message Center can be direct or indirect. Direct message calls The Message Center can be accessed by a direct message call, which can take any of the following forms: —...
Description Page 3 of 48 Automatic Call Distribution (ACD) Message Center A special aspect of ACD is defined for optional use with Message Center. Each telephone assigned to the ACD-type Message Center is equipped with an ACD in-calls key/lamp pair. One Message Indication and one Message Cancellation key/lamp pair must also be equipped if Message Waiting Indication and control are required.
Page 4 of 48 Description To answer the call, press the MSG IN-CALLS key. You can now take a message or release as required. If the caller wants to leave a message, take down the required information, then pass it on to the called party. Press the MSG INDIC key to notify the called party that they have a message waiting.
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Description Page 5 of 48 When a Message Center call comes in and the called DN displays, the MSG INDIC lamp at the operator’s telephone reflects the status of the called telephone’s Message Waiting lamp as follows. If Audible Message Waiting (AMW) is equipped in place of the lamp, interrupted dial tone indicates the called party’s status.
Page 6 of 48 Description A telephone with Message Waiting may be equipped with a key/lamp pair that notifies you when a message is waiting. When this key is pressed, you are connected with the Message Center. 500/2500 telephones with Message Waiting Allowed Class of Service may be equipped with a neon lamp for visual indication.
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Description Page 7 of 48 When a Message Center call comes in and the called DN displays, the MSG INDIC lamp at the operator’s telephone reflects the status of the called telephone’s Message Waiting lamp as follows. If Audible Message Waiting (AMW) is equipped in place of the lamp, interrupted dial tone indicates the called party’s status.
Page 8 of 48 Description Message retrieval calls All telephones have Message Waiting capability, and any SL-1 or Meridian digital telephone (except the M3000) can function as a Message Center. The DN used for message taking should be the prime DN if Message Waiting lamp Indication and Cancellation are desired.
Description Page 9 of 48 Telephones Without a Message Waiting lamp As an option in X11 Release 2, Message Waiting Indication can be provided by AMW (a 120 ipm interrupted dial tone) instead of a Message Waiting lamp, or key/lamp pair when the user goes off hook at the telephone.
Page 10 of 48 Description Answering a message retrieval call ACD Message Center The message retrieval call is presented on the MSG IN-CALLS key of a Message Center SL-1 telephone, and the digit display shows the DN of the calling telephone. The MSG CANC lamp reflects the state of the caller’s Message Waiting indication as follows: —...
Description Page 11 of 48 The Phantom Message Center ACD DN is assigned to overflow to the MSG CENTER ICI key on the Attendant Console. When a direct Message Center call comes into the console, the MSG CENTER ICI key flashes. To answer the call, the Message Center operator presses the MSG CENTER ICI key or a free LPK key.
Page 12 of 48 Description Query and/or deactivate The operator presses the MSG CANC key, and the associated lamp lights. The operator then dials the DN. No Ringback is heard, but the state of the MSG CANC lamp reflects the state of the user’s Message Waiting Indication in the same way as the MSG INDIC lamp previously described.
Description Page 13 of 48 Feature requirements The Network Message Service (NMS), package 175 requires the Message Center, package 46, for support. NMS requires all the packages necessary to support the Integrated Services Digital Network (ISDN), with package 148 as a minimum. Network Message Services in the Meridian Mail environment require the following packages: —...
Page 14 of 48 Description Message Waiting Indication (MWI) Interworking With X11 Release 19, centralized message services are now provided for a corporate network, consisting of Meridian 1 and Centrex (DMS-100) systems. This means that a user on a Meridian 1 system can directly access the voice message system on a DMS-100 and vice versa.
Description Page 15 of 48 Feature requirements MWI Interworking requires the following for each node: — Originating node (the node that has Message Center users) • NMS package 175 • ISDN Signaling package 145 • ISDN Primary Rate Access package 146 or ISDN Signaling Link package 147 •...
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Page 16 of 48 Description — Tandem node(s) (the node[s] that do not have Message Center users) • ISDN Signaling package 145 • ISDN Primary Rate Access package 146 or ISDN Signaling Link package 147 • ISDN Network Services package 148 •...
Page 17 of 48 Equipment requirements User telephones A Message Center operator can activate a Message Waiting Indication at any of the following telephones: — SL-1 telephones with MESSAGE WAITING key/lamp pair assigned — 500 telephones (equipped with a Message Waiting lamp) —...
Page 18 of 48 Equipment requirements Standard 500/2500 and SL-1 telephones Message Waiting Indication cannot be provided visually at these telephones. The user must call the Message Center by dialing the Message Center DN to check to see if there are any messages. If the system is equipped with X11 Release 2 or later, AMW can be provided when the user goes off hook in the form of an interrupted dial tone (120 ipm).
Equipment requirements Page 19 of 48 Message Center telephones The following types of apparatus are suitable for use in a Message Center: — 16-digit display SL-1 telephones — 16-digit display attendant consoles SL-1 telephones ACD Message Center 16-digit display SL-1 telephones are recommended for use in an ACD-type Message Center.
Equipment requirements Page 21 of 48 MWI Interworking MWI Interworking requires the following equipment: — Message Center for Meridian 1 system • Meridian Mail (requires Release 7 software) — Centrex switches • DMS-100 (requires BCS 36 for interworking) • DMS-250 •...
QSY22 Power Supply Power to operate the Message Waiting lamps for 500 and 2500 telephones is supplied by the QSY22 Message Waiting Power Supply Unit. (SL-1 telephones do not require this power supply.) This unit replaces the earlier QSY19 Power Unit.
This provides –150 V dc power to the cabinet in which the QSY22 is mounted. The fuses are rated at 0.25 A each and are numbered 1 to 7 (from connector J14) and 10 to 16 (from connector J15).
System requirements Page 25 of 48 Figure 1 QSY22 Power Supply connections Left mounting bracket PO634871 Q S Y 2 2 C MSG WTG PWR SPLT –150V FA –150V FA Fuse block Fuse –150V OUT –150V OUT P14 and P15...
Page 26 of 48 System requirements Figure 2 QSY22 Power Supply circuit diagram L1 QHP1488 TB1 1 48 V 6.25A 470 µF 3300 µF Slo Blo 63 V TB1 2 63 V GRD in TB1 3 GRD out TB1 4 150 V ±5% R23...
QCA8, QCA23, QCA28, and QCA37 cabinets in the same way as the QSY22. The inputs and outputs are fused in the same way as the QSY22; however, there is no alarm LED on the front panel.
Page 28 of 48 System requirements Figure 3 QSY19 Power Supply connections (This unit is no longer available) Q S Y 1 9 A Fuse for -150V to QBL16 (1.33A) 553-5854 TB1-1 (-48V IN) Input fuse (6A) TB1-2 Load TB1-3 -150V Out P14 connectors from cabinet harness 553-2691-100...
System requirements Page 29 of 48 Figure 4 QSY19 Power Supply circuit diagram –150 V –50 V TB1-3 Power Supply (–150 V output) –48 V Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 3 K 10 W F1 to F7 are 0.18 each.
Page 30 of 48 System requirements Figure 5 QBL16 Power Distribution Unit connections –150 V –50 V TB1-3 Power Supply (–150 V output) –48 V Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 3 K 10 W F1 to F7 are 0.18 each.
System requirements Page 31 of 48 Figure 6 QBL16 Power Distribution Unit circuit diagram –150 V Pin 1 from Power Supply Pin 2 Pin 3 P14 plug Pin 4 socket Pin 5 Pin 6 Pin 7 Fuses are 0.18A each. 553-2022 Message Center Description and operation...
Page 32 of 48 System requirements PE cabinets and shelves The power unit and QBL16 Distribution Unit can be used with PE cabinets of the following vintages: — QCA8: vintage E or subsequent — QCA7: vintage D or subsequent — QCA23, QCA28, QCA37: all vintages These cabinets are equipped with wiring harnesses that incorporate a cable and P14 connector.
System requirements Page 33 of 48 Maintenance Maintenance diagnostic programs are provided by the software to control and test the Message Center services. Message Waiting lamps and set indicators on Meridian products can be tested on a system basis. For a complete description of the overlay programs involved, and their operation, please refer to the X11 Software input/output guide.
Procedure Note: The QSY22 includes the cables required for the –48 and –150 V power leads. The cabinet wiring harness may or may not contain a P14 plug, depending on whether or not PE is provided in the cabinet.
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Connect the BLACK lead (with two lugs) between the TB1 terminal 3 of the QSY22 unit and the ground bus in the center of the cabinet. Connect the other BLACK lead (lug end) to the TB1 terminal 2 of the QSY22 unit and the ground terminal (1) of the TBC.
Procedure 2. This unit is mounted in the QCA7 companion cabinet next to the cabinet containing a QSY22 or QSY19, and in the same relative location within the cabinet as the QSY22/QSY19. Procedure 2 Installing the QBL16 Message Waiting Distribution Box Position the QBL16 unit in the QCA7 cabinet, and secure it with four mounting screws.
Page 39 of 48 Feature interaction ACD Message Center The operation of ACD Message Center telephones is basically the same as an ACD system with incoming call queues and available agent queues. The ACD Message Center cannot operate in combination with an Attendant Message Center.
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Page 40 of 48 Feature interaction Call Forward (All Calls) Call Forward should be denied on telephones serving as the Message Center. On a telephone basis, Call Forward takes precedence over the Message Center. If a call is forwarded to another telephone, activation of Message Waiting depends on whether or not the second telephone has Message Waiting Allowed.
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Feature interaction Page 41 of 48 These telephones have the capability to light or extinguish Message Waiting lamps by manually entering the DN of the telephone for which a message was taken. Call processing is the normal call processing for CFNA, not the Message Center call processing.
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Page 42 of 48 Feature interaction User Selectable Call Redirection (USCR) USCR allows the user to perform the following two tasks: — To assign the four redirection DNs from the telephone. These DNs include the CFNA DN and the external CFNA DN (if it exists). —...
Page 43 of 48 Message Center packaging If an ACD Message Center is not required, the customer must order only the Message Center package. However, if an ACD Message Center is required, the appropriate ACD package should be ordered in addition to Message Center.